RE: Government Habitiat Programs
Sorry Bud,
All the Goverment contracts are to set land aside from farming.
In order to qualify your land must have been used as agriculture for the last few years. they check this by the records at your local farm office.
20 acres even if you qualified still is not going to make you a big amount of money.
I would suggest that you go with your thoughts of leaving it alone for wild life. Plant a few food plots and make sure you burn or lightly disc every other year to prevent trees from popping up